2 * Read code for Storage daemon
4 * Kern Sibbald, November MM
9 Bacula® - The Network Backup Solution
11 Copyright (C) 2000-2006 Free Software Foundation Europe e.V.
13 The main author of Bacula is Kern Sibbald, with contributions from
14 many others, a complete list can be found in the file AUTHORS.
15 This program is Free Software; you can redistribute it and/or
16 modify it under the terms of version two of the GNU General Public
17 License as published by the Free Software Foundation plus additions
18 that are listed in the file LICENSE.
20 This program is distributed in the hope that it will be useful, but
21 WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
30 Bacula® is a registered trademark of John Walker.
31 The licensor of Bacula is the Free Software Foundation Europe
32 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
33 Switzerland, email:ftf@fsfeurope.org.
39 /* Forward referenced subroutines */
40 static bool record_cb(DCR *dcr, DEV_RECORD *rec);
43 /* Responses sent to the File daemon */
44 static char OK_data[] = "3000 OK data\n";
45 static char FD_error[] = "3000 error\n";
46 static char rec_header[] = "rechdr %ld %ld %ld %ld %ld";
49 * Read Data and send to File Daemon
50 * Returns: false on failure
53 bool do_read_data(JCR *jcr)
55 BSOCK *fd = jcr->file_bsock;
57 DCR *dcr = jcr->read_dcr;
59 Dmsg0(20, "Start read data.\n");
61 if (!bnet_set_buffer_size(fd, dcr->device->max_network_buffer_size, BNET_SETBUF_WRITE)) {
66 create_restore_volume_list(jcr);
67 if (jcr->NumReadVolumes == 0) {
68 Jmsg(jcr, M_FATAL, 0, _("No Volume names found for restore.\n"));
69 free_restore_volume_list(jcr);
70 bnet_fsend(fd, FD_error);
74 Dmsg2(200, "Found %d volumes names to restore. First=%s\n", jcr->NumReadVolumes,
75 jcr->VolList->VolumeName);
77 /* Ready device for reading */
78 if (!acquire_device_for_read(dcr)) {
79 free_restore_volume_list(jcr);
80 bnet_fsend(fd, FD_error);
84 /* Tell File daemon we will send data */
85 bnet_fsend(fd, OK_data);
86 ok = read_records(dcr, record_cb, mount_next_read_volume);
88 /* Send end of data to FD */
89 bnet_sig(fd, BNET_EOD);
91 if (!release_device(jcr->read_dcr)) {
95 free_restore_volume_list(jcr);
96 Dmsg0(30, "Done reading.\n");
101 * Called here for each record from read_records()
102 * Returns: true if OK
105 static bool record_cb(DCR *dcr, DEV_RECORD *rec)
108 BSOCK *fd = jcr->file_bsock;
112 if (rec->FileIndex < 0) {
115 Dmsg5(400, "Send to FD: SessId=%u SessTim=%u FI=%d Strm=%d, len=%d\n",
116 rec->VolSessionId, rec->VolSessionTime, rec->FileIndex, rec->Stream,
119 /* Send record header to File daemon */
120 if (!bnet_fsend(fd, rec_header, rec->VolSessionId, rec->VolSessionTime,
121 rec->FileIndex, rec->Stream, rec->data_len)) {
122 Pmsg1(000, _(">filed: Error Hdr=%s\n"), fd->msg);
123 Jmsg1(jcr, M_FATAL, 0, _("Error sending to File daemon. ERR=%s\n"),
127 Dmsg1(400, ">filed: Hdr=%s\n", fd->msg);
131 /* Send data record to File daemon */
132 save_msg = fd->msg; /* save fd message pointer */
133 fd->msg = rec->data; /* pass data directly to bnet_send */
134 fd->msglen = rec->data_len;
135 Dmsg1(400, ">filed: send %d bytes data.\n", fd->msglen);
136 if (!bnet_send(fd)) {
137 Pmsg1(000, _("Error sending to FD. ERR=%s\n"), bnet_strerror(fd));
138 Jmsg1(jcr, M_FATAL, 0, _("Error sending to File daemon. ERR=%s\n"),
143 fd->msg = save_msg; /* restore fd message pointer */